结构工程师2024，Vol.40Issue(3)：125-134,10.
填埋场复合衬垫界面动力剪切特性研究
Experimental Study on the Dynamic Shear Behavior of Composite Liner Interface in Landfills
摘要
Abstract
Landfill is the main disposal method of municipal solid waste in China.Liner system is a vital part for modern municipal solid waste(MSW)landfills due to its essential function as a barrier between pollutants and environment.However,due to the relatively lower shear strength between landfill liners,the composite liner interface may become the potential slip interface under earthquake loading,which will lead to instability of the landfill.In this paper,a series of dynamic shear tests considering the effect of shear displacement amplitude were carried out by using a large interface direct shear apparatus,the shear stress-displacement relations and dynamic shear strength evolution process of textured HDPE geomembrane-compacted clay composite liner interface were obtained.The amplitude correlation between dynamic shear modulus and dynamic damping ratio were further analyzed.The comparisons between existing data on other composite liner materials validate the efficiency of textured geomembrane-compacted clay when the landfill exposed to dynamic loading.关键词
填埋场复合衬垫/土工膜-压实黏土界面/动力剪切特性Key words
landfill composite liner/geomembrane-compacted clay interface/dynamic shear behavior引用本文复制引用
冯世进,史嘉梁,郑奇腾..填埋场复合衬垫界面动力剪切特性研究[J].结构工程师,2024,40(3):125-134,10.基金项目
国家自然科学基金重点项目(41931289),国家自然科学基金杰出青年基金项目(41725012),国家重点研发计划项目(15ZZ081) （41931289）
